<li id="left_menu_task_tree" class="left_menu_tree_open nav-item has-treeview">
    <a id="left_menu_task" href="#" class="nav-link left_menu_button_active">
        <i class="fa fa-fw fa-tasks"></i>
        <p>已有任务<i class="right fas fa-angle-left"></i></p>
    </a>
    <ul class="nav nav-treeview">
        <li class="nav-item">
            <a id="left_menu_academyTask" onclick="loadAcademyTaskLine()" href="javascript:void(0)"
                class="left_menu_button_active nav-link">
                <i class="far fa-circle nav-icon"></i>
                <p>学院任务</p>
            </a>
        </li>
        <li class="nav-item">
            <a id="left_menu_classTask" onclick="loadClassTaskLine()" href="javascript:void(0)"
                class="left_menu_button_active nav-link">
                <i class="far fa-circle nav-icon"></i>
                <p>班级任务</p>
            </a>
        </li>
    </ul>
</li>